One easier method you might try first is just powering down the panel. In my GK, there's an in-line fuse to the right of the batteries. Just pop the fuse out and reinsert. Not sure if this will fix your problem or not, but worth a try. This fixed a problem I had of no readout at all.
Ken & Patty
2015 38GK Onan DW W-D Disks MorRyde IS & Pin-box Trav'ler 2015 GMC Denali 3500HD DRW Duramax
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